Initial commit: Purrse personal finance app

Self-hosted, plugin-extensible personal finance manager built with
ASP.NET Core 9.0, Vue 3 + Vuetify 3, and PostgreSQL 17.

Backend (8 .NET projects):
- Core: 19 domain models, 6 enums, 14 DTOs, 12 service interfaces
- Data: EF Core DbContext, 16 entity configurations, category seeder
- API: 14 controllers, 15 services, JWT auth, SignalR, middleware
- Plugins: Abstractions + OFX/CSV/QIF file parsers
- Tests: 28 xUnit tests (fingerprinting, duplicate detection, parsers)

Frontend (Vue 3 + Vuetify 3 + TypeScript):
- 13 views, Pinia stores, Axios API services with JWT interceptors
- Dashboard, accounts, transactions, categories, imports, and more

Deployment:
- Docker Compose (PostgreSQL 17 + .NET API + nginx frontend)
- Auto-migration on startup

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/Purrse.Api/Services/ScheduledTransactionProcessor.cs

@@ -0,0 +1,34 @@
+using Purrse.Core.Interfaces.Services;
+
+namespace Purrse.Api.Services;
+
+public class ScheduledTransactionProcessor : BackgroundService
+{
+    private readonly IServiceScopeFactory _scopeFactory;
+    private readonly ILogger<ScheduledTransactionProcessor> _logger;
+
+    public ScheduledTransactionProcessor(IServiceScopeFactory scopeFactory, ILogger<ScheduledTransactionProcessor> logger)
+    {
+        _scopeFactory = scopeFactory;
+        _logger = logger;
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            try
+            {
+                using var scope = _scopeFactory.CreateScope();
+                var service = scope.ServiceProvider.GetRequiredService<IScheduledTransactionService>();
+                await service.ProcessDueTransactionsAsync();
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error processing scheduled transactions");
+            }
+
+            await Task.Delay(TimeSpan.FromHours(1), stoppingToken);
+        }
+    }
+}